CN203801115U - Singlechip microcomputer and NCP5623 chip based three-primary color LED backlight source - Google Patents
Singlechip microcomputer and NCP5623 chip based three-primary color LED backlight source Download PDFInfo
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- CN203801115U CN203801115U CN201420109906.2U CN201420109906U CN203801115U CN 203801115 U CN203801115 U CN 203801115U CN 201420109906 U CN201420109906 U CN 201420109906U CN 203801115 U CN203801115 U CN 203801115U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model relates to a singlechip microcomputer and NCP5623 chip based three-primary color LED backlight source. The three-primary color LED backlight source comprises a singlechip microcomputer, an NCP5623 chip connected with the singlechip microcomputer through an I2C bus and three-primary color LEDs connected with the NCP5623 chip respectively, wherein a clock signal end SCL and a data signal end SDA of the singlechip microcomputer are connected to an SCL port and an SDA port of the NCP5623 chip respectively; a VBAT port and a VDET port of the NCP5623 chip are connected to a power supply, and an IREF port is connected to a reference resistor; the three-primary color LEDs are connected to an LED1 port, an LED2 port and an LED3 port of the NCP5623 chip respectively; and voltage input ends of the three-primary color LEDs are further connected to a filtering capacitor. The singlechip microcomputer and NCP5623 chip based three-primary color LED backlight source enables a backlight circuit module to be more integrated and miniaturized, and optimizes the circuit structure, reduces the loss and improves the stability at the same time.
Description
Technical field:
The utility model relates to LED-backlit source technology field, refers in particular to a kind of primitive colours LED backlight based on single-chip microcomputer and NCP5623 chip.
Background technology:
Liquid crystal display (LCD) is optical modulation device, and self is not luminous, so in order to be clear that the displaying contents of transmissive type liquid crystal display, need to mate a backlight to liquid crystal display screen.It is light source that current backlight module is generally used cold-cathode tube (CCFL), has comprised the light frequencies of all kinds such as red, green, blue.CCFL is used on flat-panel monitor widely because of advantages such as briliancy is high, with low cost, technology maturations.Along with the improvement of light-emitting diode (LED) brightness, LED-backlit module displays goes out the incomparable advantage of CCFL, as color reducibility is good, the life-span long, not mercurous, be conducive to environmental protection, these become the study hotspot in LCD backlight module.
Yet existing LED-backlit source circuit structure is comparatively complicated, and backlight circuit module is larger, and circuit loss is also larger, less stable.
Utility model content:
The purpose of this utility model is to overcome the above-mentioned weak point of prior art, and a kind of primitive colours LED backlight based on single-chip microcomputer and NCP5623 chip is provided.
The utility model is realized the technical scheme that its object adopts: a kind of primitive colours LED backlight based on single-chip microcomputer and NCP5623 chip, and this primitive colours LED backlight comprises single-chip microcomputer, the NCP5623 chip being connected with single-chip microcomputer by I2C bus and the primitive colours LED being connected respectively with NCP5623 chip; Wherein, the clock signal terminal SCL of single-chip microcomputer and data-signal end SDA are connected respectively SCL port and the SDA port of NCP5632 chip; VBAT port and the VDET port of NCP5632 chip connect power supply, and IREF port connects a reference resistance; Primitive colours LED connects respectively LED1 port, LED2 port, the LED3 port of NCP5632 chip; And the voltage input end of primitive colours LED is also connected with filter capacitor.
Described reference resistance resistance is 62k Ω, and the specification of filter capacitor is 6.3V/1 μ F.
The utility model adopts single-chip microcomputer as the control core device of LED, the static state of selecting NCP5623 chip to realize LED-backlit source shows, single-chip microcomputer can be controlled NCP5623 chip by I2C agreement, thereby the order that NCP5623 chip sends according to single-chip microcomputer regulates the brightness of the LED of 3 kinds of colors to reach effect backlight.The beneficial effects of the utility model are mainly reflected in:
1, optimize circuit structure, reduced loss, improved stability;
2, make backlight circuit module more integrated, miniaturization;
3, have a good color corresponding, brightness can dynamically be revised with contrast, to reach better image quality.
Accompanying drawing explanation:
Fig. 1 is the whole hardware structure diagram of the utility model primitive colours LED backlight.
Embodiment:
Below in conjunction with specific embodiments and the drawings, the utility model is further illustrated.
As shown in Figure 1, described in the utility model is a kind of primitive colours LED backlight based on single-chip microcomputer and NCP5623 chip, and this primitive colours LED backlight comprises single-chip microcomputer 1(MCU), the NCP5623 chip 2 being connected with single-chip microcomputer by I2C bus and the primitive colours LED (RGB red, green, blue) 3 being connected respectively with NCP5623 chip 2; Wherein, the clock signal terminal SCL of single-chip microcomputer 1 and data-signal end SDA are connected respectively SCL port and the SDA port of NCP5632 chip 2; VBAT port and the VDET port of NCP5632 chip 2 connect power supply, and IREF port connects the reference resistance that a resistance is 62k Ω, to obtain reference voltage; Primitive colours LED connects respectively LED1 port, LED2 port, the LED3 port of NCP5632 chip 2; And the voltage input end of primitive colours LED is also connected with filter capacitor, the specification of filter capacitor is 6.3V/1 μ F, to play filter effect; The port that in like manner NCP5632 chip 2 connects power supply is also connected with the filter capacitor of a same size.
In the utility model, NCP5623 chip is a kind of high energy efficiency 3 tunnel output LED drivers, with I2C interface, and built-in progressive dimming function, 3 paths of LEDs can independently be controlled, and total LED electric current can reach 90mA, and is a kind of unleaded device.
The utility model adopts single-chip microcomputer as the control core device of LED, the static state of selecting NCP5623 chip to realize LED-backlit source shows, single-chip microcomputer can be controlled NCP5623 chip by I2C agreement, the order that NCP5623 chip sends according to single-chip microcomputer produces action, thereby regulates the brightness of the LED of 3 kinds of colors to reach effect backlight.The beneficial effects of the utility model are: 1, optimized circuit structure, reduced loss, improved stability;
2, make backlight circuit module more integrated, miniaturization;
3, have a good color corresponding, brightness can dynamically be revised with contrast, to reach better image quality.
More than just the utility model has been carried out to exemplary explanation, specific implementation of the present utility model is not limited to this.The insubstantial modifications that any employing design of the present utility model and technical scheme are carried out, all within protection range of the present utility model.
Claims (2)
1. the primitive colours LED backlight based on single-chip microcomputer and NCP5623 chip, is characterized in that: this primitive colours LED backlight comprises single-chip microcomputer, the NCP5623 chip being connected with single-chip microcomputer by I2C bus and the primitive colours LED being connected respectively with NCP5623 chip; Wherein, the clock signal terminal SCL of single-chip microcomputer and data-signal end SDA are connected respectively SCL port and the SDA port of NCP5632 chip; VBAT port and the VDET port of NCP5632 chip connect power supply, and IREF port connects a reference resistance; Primitive colours LED connects respectively LED1 port, LED2 port, the LED3 port of NCP5632 chip; And the voltage input end of primitive colours LED is also connected with filter capacitor.
2. the primitive colours LED backlight based on single-chip microcomputer and NCP5623 chip according to claim 1, is characterized in that: described reference resistance resistance is 62k Ω, and the specification of filter capacitor is 6.3V/1 μ F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109906.2U CN203801115U (en) | 2014-03-11 | 2014-03-11 | Singlechip microcomputer and NCP5623 chip based three-primary color LED backlight source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109906.2U CN203801115U (en) | 2014-03-11 | 2014-03-11 | Singlechip microcomputer and NCP5623 chip based three-primary color LED backlight source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203801115U true CN203801115U (en) | 2014-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420109906.2U Expired - Fee Related CN203801115U (en) | 2014-03-11 | 2014-03-11 | Singlechip microcomputer and NCP5623 chip based three-primary color LED backlight source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203801115U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106820816A (en) * | 2017-03-21 | 2017-06-13 | 桐乡市万达利电器有限公司 | Moveable electric-heating device |
-
2014
- 2014-03-11 CN CN201420109906.2U patent/CN203801115U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106820816A (en) * | 2017-03-21 | 2017-06-13 | 桐乡市万达利电器有限公司 | Moveable electric-heating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20160311 |